3M EC-3532
Harmonization Code : 3214.10.00 | Putty and other mastics | Resin cements, caulking compounds and other mastics
Main features
- Tough Impact Resistant Assembly
- Rapid Non Sag Placement
- Primed Multi Material Bonding
Product Description
3M Scotch-Weld Urethane Adhesive EC-3532 B/A is a two-part polyurethane adhesive that cures at room temperature or with heat to form tough, impact-resistant bonds. It adheres to many primed or painted metals and selected plastics, while the mixed material becomes non-sag in approximately 30 seconds for controlled placement on vertical or irregular joints. Equal-volume mixing and a 5 to 15 minute work life at 24 deg C support practical alignment before fixturing. After cure, prepared aluminum overlap shear reaches 2200 psi at 24 deg C and 2500 psi at -40 deg C.
Key features
- Tough Impact Resistant Bonding: The cured polyurethane supports assemblies exposed to shock and service movement.
- Rapid Non Sag Control: The mixed adhesive resists sagging in approximately 30 seconds.
- Primed Metal And Plastic Adhesion: The urethane bonds many compatible primed or painted substrates.
Applications
Bonding primed or painted metals, selected plastics, and industrial or aerospace assemblies requiring tough, impact-resistant joints.
TDS, SDS & Technical Documents
Technical Specifications
General Properties
Additional Information
As-supplied / before-processing properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Part B color | Off white | - | Polyol component |
| Part A color | Brown | - | Isocyanate component |
| Mix ratio by weight | 100:109 | B:A | Two-part system |
| Mix ratio by volume | 100:100 | B:A | Two-part system |
| Base viscosity | 10000 to 55000 | cP | At 24 deg C |
| Accelerator viscosity | 15000 to 40000 | cP | At 24 deg C |
| Work life | 5 to 15 | min | 100 g mixed at 24 deg C |
| Non-sag development | Approximately 30 | sec | After mixing |
After-processing / final-state properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Color | Brown | - | Cured |
| Full cure | 24 | h | At 24 deg C |
| Overlap shear strength | 2500 | psi | Etched aluminum; tested at -40 deg C |
| Overlap shear strength | 2200 | psi | Etched aluminum; tested at 24 deg C |
| Overlap shear strength | 300 | psi | Etched aluminum; tested at 82 deg C |
| Overlap shear strength | 700 | psi | Polycarbonate; tested at 24 deg C |
